Yarn pack and method of and means for its preparation



H. BUDDECKE Sept. 3, 1957 YARN PACK AND METHOD OF AND MEANS FOR ms PREPARATION Filed May 17, 1952 4 Sheets-Sheet. l

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H. BUDDECKE v Sept. 3, 1957 v YARN PACK AND METHOD OF AND MEANS FOR ITS PREPARATION Filed May 1'7, 1952 4 Sheets-Sheet 2 Sept. 3, 1957 H. BUDDECKE 2,304,973

YARN PACK AND METHOD OF AND MEANS FOR ITS PREPARATION Filed May 1'7, 1952 4 Sheets-Sheet 3 Fig. [7 I hue/Jar: 9

p 3, 1957 H. BUDDECKE 2,804,973

YARN PACK AND METHOD OF" AND MEANS FOR ITS PREPARATION Filed- May 17, 1952 4 Sheets-Sheet 4 United States YARN PACK AND METHOD 9F AND MEANS FOR ITS PREPARATION Heinrich Buddecke, Rheda, Germany Application May 17, 1952, Serial No. 238,3fi4

2 Claims. (ill. 206--64) points only are sustained by the separating leaves. For

the preparation of yarn packs of this type, complicated machines are required which, in stages, produce the individual layers, the separating leaves which may be composed of a plurality of individual strips being introduced and the separating leaves being interconnected in doing so.

In accordance with the present invention, a yarn pack that may be prepared by considerably simpler means and more rapidly and which in itself is more simple, consists in that the yarn layers are arranged in layers surrounding one another, of hollow cylindrical, hollowconical, hollow-prismatic shape, or helicoidally coiled. The yarn coils of each layer may run in the direction of the generating line of the layers or in the direction of the circumference. The separating leaves exert a certain pressure upon their yarn layers, thereby preventing any involuntary change in the shape of the wound coils.

At one of their ends, the separating leaves are glued to form an open separating leaf skeleton from which the yarn thread may be withdrawn at the other end; and this separating leaf skeleton will retain its shape irrespective of any length of thread that may have been withdrawn already.

Similarly, in a yarn pack two or more groups of yarn layers of yarn of a different type, c. g. of different colors, may be assembled.

Of particularly simple construction is a pack in which a yarn strip and a separating leaf strip are laid one on top of the other, and coiled in helicoidal manner.

The method of preparing the packs in principle is carried out in such a way that a yarn coiling strip with its coils by preference overlapping in scale-like fashion are placed on a separating leaf and bent with the latter in correspondence with a circle or some other closed curve or helicoidal line. A highly efficient and simple method of production consists in that the yarn thread proceeding at one end of a ceiling mandrel longitudinal in section and helicoidally wound thereon, is taken oif at the other end of the coiling mandrel in the shape of a yarn coiling strip, with the yarn coils being shifted and a separating strip being fed continually, being subsequently laid flat whereby a scale-like overlapping of the helicoidal coils is produced, whereupon both strips are coiled -to form a cylinder, or the like.

The apparatus employed in carrying-out the process consists of a rotating yarn releasing mechanism operating around a stationary coiling mandrel of longitudinal section, a mechanism for laying flat the yarn coils coming from the ceiling mandrel, a conveying mechanism feedatent Patented Sept. 3, 1957 ing the separating leaf strip toward one of the broadsides of the yarn coiling strip, and a coiling mechanism coiling the yarn coiling strip together with the separating leaf strip. For the purpose of continually stripping off, the faces on the narrow sides of the coiling mandrel are made of movable edge portions releasing the coiled windings corresponding to the number of freshly formed new coils over the end of the coiling mandrel, the band employed for that purpose preferentially being disposed endless on rollers in a hollow space of the coiling mandrel, a roller disposed in back of the yarn releasing device serving as a drive.

Further characteristics of the invention will become evident from the following description of various examples of execution of the invention.

In the dnawings forming part of the description,

Fig. l is a cross section through a helicoidally coiled pack with one type of yarn;

Fig. 2 is a corresponding section through a pack containing two types of yarn;

Fig. 3 is a section through a helicoidally coiled pack of square section;

Fig. 4 is a perspective view of a helicoidally coiled pack with the yarn thread running in the direction of the generating line;

Fig. 5 is a view of the bottom end of a helicoidally coiled pack;

Fig. 6 is a perspective view of a pack according to Figure 3;

Fig. 7 is a corresponding view of the bottom end;

Figs. 8 to 11 are various forms of separating leaves in perspective;

Fig. 12 is a square-coiled pack in the opened state;

Fig. 13 is a double pack;

Fig. 14 is a diagrammatic representation of a device for the production of helicoidally coiled packs;

Figs. 15 and 16 are corresponding details thereof;

Fig. 17 is a diagrammatic view of a different producing device,

Figs. 18 and 19 are details belonging thereto;

Figs. 20 and 21 show a third producing device and Fig. 22 is a perspective View of a pack similar to that of Fig. 12.

In accordance with the cross section as per Fig. l, a thread winding strip 1 consisting of oblong helicoidal windings and a separating leaf strip 2 are wound up, in such a way, that a cylindrical pack (Fig. 4) will result. With the type of execution in accordance with Fig. 4, the thread coils of the strip 1 run in the direction of the generating line of the cylinder. From Fig. 4, it will be 'seen that each oblong coil overlaps the preceding coil by one of its vertical parts and that all returns between the two, vertical parts of the coils are bent in the same direction (counter clockwise) so that the yarn strip can be coiled round a ceiling mandrel with great velocity. Therefore, the thread end 3 may be withdrawn uninterruptedly in axial direction of the pack from the latter, one thread winding after anotl er being withdrawn without the thread windings following thereafter being impaired as regards position for the reason that they are retained by a correspondingly firm tension of the separating leaf strip 2. At the bottom end S situated opposite the releasing end 4, the windings of the separating leaf strip are glued to one another by means of a flap 6 (see Fig. 5).

Apart from a circular cross section, the pack may be given any other shape desired, e. g. that of a triangle, of a square (Fig. 3), of a polygon, of an oval, of an oblong rectangle, or the like.

It is recommended to put a wrapper of paper or cardboard 7 (Fig. 6) round the pack consisting of the thread coil strip 1 and the separating leaf strip 2, provided at the releasing end with a closing lid 8, the wrapper being provided on one of its longitudinal sides with a control opening 9 for the exterior layer of thread, closed by cellophane or similar material. It is recommended to employ for the control opening a foil of a coloring and of a material that will filter off the luminous rays causing the yarn to fade. The individual windings of the separating leaf strip 2 are preferably glued one to another at the bottom end according to Fig. 7 in such (a way that they form sort of a separating leaf skeleton retaining its form irrespective of the length of the thread already drawn olf.

With a view to preventing that more than one winding be withdrawn from the pack, the separating leaf strips are provided with a rough surface obtained by stamping (Fig. 8), roughing (Fig. 9), perforating (Fig. 10), undulating (Fig. 11), or the like.

To make it possible to feed the thread, the yarn its corners or edge portions beyond the periphery of the pack and cooperating e. g. at the edges of the wrapper. If a wrapper is dispensed with, the separating leaf strips 2 as per Figs. 8 to 10 may themselves be provided with control openings 9.

Frequently it is desirable to have two or more yarn types, especially yarns of various colours, united in one pack. Fig. 13 shows such a pack for two kinds of yarn, and Fig. 10 shows the corresponding separating leaf with tongues 11' pressed in strip. The withdrawal of the yarn or thread ends 3 and 3 is effected from both ends of the pack. In the center,

the separating leaf strip is provided with multiple creas- .ing 13 by means of which a groove 14 may be formed between the two coiled yarn winding strips, within the reach of which the windings of the separating leaf strip may be glued to one another whereby likewise aform preserving separating leaf skeleton is procured. Another possibility of packing several kinds of yarn consists in placing two or a plurality of yarn winding strips of yarn of varying type one on top of the other with their separating leaf strips winding the same in helical fashion. Fig. 2

is a section through such a pack containing two kinds of yarn.

The production of the packs described may be a continuous one or one by steps. In continuous production, the yarn is coiled round it]. stationary coiling mandrel. These coils or windings are stripped off this coiling mandrel continually, pressed fiat and coiled in unity with a separating leaf strip. in the apparatus provided for this method of production, according to Figs. 14 to 16,

.a stationary coiling mandrel 16 of narrow rectangular cross section (Fig. has been provided round which the yarn releasing device in the shape of a turntable 17,

va yarn spool 18, and a thread tensioner, or thread guide 19, respectively, rotate. The coil-ing mandrel has a cavity and in the hollow space an endless band 20 according to Fig. 16 is guided by rollers 21, 22, 23, 24, in such a way, that the lateral faces of the coiling mandrel are formed by movable band portions both of which move toward the free end of the coiling mandrel (arrow Simultaneously with the rotation of the yarn releasing device, movement of the band 29 as indicated by arrow 25 is effected, and this has been adjusted in such a way that the yarn is wound on. the coiling mandrel in more or'less close windings the yarn windings being subsequently moved along toward the end by the moving band portions and stripped off the coiling mandrel.

In correspondence with the movement of the yarn winding strip 1, a separating leaf strip 2 is fed from a supplying roller 26 by way of rollers 27, 28, said strip being wound helically together with the yarn winding strip on to a roller axle 29.

Previous to this, the yarn windings are laid flat so as to get into overlapping position in a scale-like manner. This is achieved with the aid of an endless band 31 driven by a roller 32 and pressing against the yarn windings leaving the coiling mandrel with the lower side of the forward pointed portion 33.

Axle 29 of the coiling roller is supported on frames 34 adjustable in height. A plurality of axles 29 such as for instance axles disposed on a star wheel or turret head turning round a vertical axis, may be provided which may be brought into openating position with regard to the yarn winding strip one after another, in order to wind on said strip in consecutive order one yarn body each. With a view to permitting the glueing of the separating leaves to be effected comfortably at the one end of the yarn body, the corresponding edge of the separating leaf strip may be beaded by a beading roller 56 in counterposition during the coiling operation.

The drive of the apparatus is effected by a motor 35 in common which drives a shaft 37 by way of a belt transmission 36, said shaft acting upon the drive roller 24 for the band 26 by way of a pair of bevel gears 38, while by way of a pair of gears 39 and an intermediate shaft 41 the yarn releasing device is driven by way of a V-belt connection 42, the feeding mechanism 27, 28 for the separating leaf strips through transverse shafts 43, and the pressing mechanism 3133 and the coiling roller 29 by supplementary suitable transmitting connections With the apparatus according to Figs. 17 and 18 destined for the production of the yarn pack by steps, the yarn winding strip 1 is wound on a narrow rectangular frame 46 consisting of ledges 47, 48 and held apart at least at one end by an articulated joint 49. By way of this frame, the wound yarn strip is placed on a table 51 with the interposition of the separating leaf strip reeled off a supplying roller 26, and after pressing down a pressure plate 52 adjustable in height, the articulated joint is bent in as illustrated in Fig. 20, and the frame 46 is withdrawn from the yarn winding strip. Thereupon, the yarn windings are pressed flat together with the aid of pressure plate 52, in such a way, that they overlap in scale-like fashion. After lifting the pressure plate 52, the axle 29 of the coiling roller is turned in such a way that the flat-pressed yarn winding strip as well as a corresponding portion of the separating leaf strip are coiled.

The drive of the coiling roller 29 is effected by way of a drive shaft 53 which is connected with a mechanism for lifting and lowering the table 51 through meshing bevel gears 54-, 55 to adjust the same in accordance with the coiling diameter of roller 29.

Within the range of the ceiling roller 29 a knurling roller 56 (Fig. 17) may be provided beading the edge of the separating leaf strip 2. In the third type of execution of a device for the production of the yarn packs as shown in Figs. 20 and 21, the thread 57 is taken from a yarn spool 59 rotating round a stationary axle 58 and wound in coils over pins 62, 63 by way of an oscillating thread guide 61.

The pins 62, 63 are mounted on endless strips 64, 65 moved in such a way that the yarn coils are wound .round the pin couples 62, 63 moving up from the left uncharged. The thread winding strip 1 produced moves across a table top 66 and is laid flat from above by an endless band 67, the pins 62, 63 being withdrawn simultaneously from the thread turns by correspondingly guiding the pin strips 64, 65, and the windings with the cooperation of the separating leaf strip are brought into tight alignment in such a way that they line up closely and in scale-like fashion one next to the other. The

thread winding strip in union with a separating leaf strip moving up from below is then coiled spirally on a coiling roller 68.

To speak of details, the eye 69 (Fig. 21) of the thread guide is moved in such a way that the thread 57 is wound round each individual pin 63 by 180 while within the range of the pins 62 it is subjected to a supplementary motion in longitudinal direction of the thread winding strip in order to embrace always two pins 62 at a time. In this manner, a piling up in scale-like manner of the individual thread windings is provided for from the beginning.

The upper strand of the pin strip 64 is arranged in an inclined position with regard to the table top 66, in such a way, that the pins 62 protruding the furthest from slot 71 of the table within the range of the thread guide 61, 69, are gradually drawn into the slot and Withdrawn from the thread windings.

The separating leaf strip 2 joining through a slot 72 from below leaves the thread winding strip 1 free on one of the broadsides; on the other broadside, the one in back in the drawing, said strip extends beyond the thread turns and is provided there with notches 73. They serve the purpose to permit of the separating leaf edge being easily bent over and pasted to the cardboard piece 5 (Fig. 22).

To keep the separating leaf strip 2 joining from below, and the pin strip 65 from disturbing one another, the latter, as may be seen from Fig. 21, is run in crossed fashion, in such a way, that the pins 63 moving away from the range of the thread guide 61, 69, are gradually inclined inwards and withdrawn laterally from the thread turns.

Previous to undertaking the spooling of the yarn, the separating leaves or separating leaf strips may be prepared with a preservative against moths, a disinfectant, or the like whereby the yarn of the finished pack will be protected against damage done by moths, the entering of bacteria and other deleterious influences without any need of being itself treated.

What I claim is:

1. In a method of producing yarn packs, forming a strip consisting of oblong yarn windings transversally arranged in the strip, pressing flat and together said yarn windings so that adjacent windings overlap each other in scale-like manner, placing said yarn winding strip on a single separating leaf strip, winding up said yarn winding strip together with said single separating leaf strip to form a roll, and joining the edges of the coils of the separating leaf strip projecting at the one end of the roll beyond the yarn winding strip in order to form a separating leaf skeleton open at its one end for pulling out the yarn.

2. In a yarn pack of the class described, a yarn layer consisting of a strip of helicoidal yarn coils of oblong pattern transversely arranged in the strip, adjacent coils overlapping each other in scale like manner, a single separating leaf strip underlying said strip of helicoidal overlapping yarn coils forming together with same a wound up roll, the windings of the edge of the separating leaf strip projecting beyond the windings of the edge of the yarn strip at one end of the roll, means for joining said projecting windings of the separating strip with each other, whereby a separating leaf skeleton is formed sustaining at one end of the roll the turns of yarn coils regardless of the length of yarn already being pulled out, said skeleton being open at the other end of the roll for pulling out the yarn in the direction of the axis of the roll without entanglement.

References Cited in the file of this patent UNITED STATES PATENTS 164,284 Farmer June 8, 1875 797,378 Schubert Aug. 15, 1905 959,781 Moyer May 31, 1910 1,539,825 Bodwell June 2, 1925 1,878,306 Whittier Sept. 20, 1932 1,983,141 McFarland Dec. 4, 1934 2,035,930 Strong Mar. 21, 1936 2,061,578 Huyett Nov. 24, 1936 2,320,798 Runquist et al. M June 1, 1943 2,331,004 Standish Oct. 5, 1943 2,436,402 Potter Feb. 24, 1948 2,552,594 Scott May 15, 1951 2,615,614 Linda Oct. 28, 1952 FOREIGN PATENTS 739,709 France Nov. 3, 1932 453,345 Great Britain Sept. 9, 1936 847,102 France June 26, 1939 

